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Process for producing aerated concrete from calcium carbide waste slag

A technology of aerated concrete and calcium carbide waste residue, which is applied in the production, application, and household appliances of ceramic materials, and can solve problems such as environmental pollution, and achieve the effects of reducing production costs, uniform pores, and improving strength

Inactive Publication Date: 2009-01-28
SUZHOU BAIGAO NEW CONSTR MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above-mentioned problems of polluting the environment, we analyzed that the main component of calcium carbide residue is slaked lime. According to the performance of the raw materials used in aerated coagulation products, we used calcium carbide residue to replace part of the lime to make slurry, and proposed a method of turning waste into The process of producing aerated concrete by using calcium carbide residue as raw material to reduce the cost

Method used

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  • Process for producing aerated concrete from calcium carbide waste slag

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Embodiment 1

[0020] As can be seen from the accompanying drawings, a process for producing aerated concrete using calcium carbide waste residue as raw material, in accordance with the requirements for the production of 05-grade products, the specific process is as follows:

[0021] a. Mixing pulping 1: The volume ratio of materials is: 1250kg of quartz sand with a moisture content of about 20%, 140kg of calcium carbide waste residue with a moisture content of about 30%, and 50kg of gypsum with a moisture content of about 30%. 1.75 of the mixture;

[0022] b. Grinding 2: Use a slurry pump to pump the above mixture into a ball mill for grinding for 30min-60min, so that the mixture reaches a slurry with a specific gravity of 1.53-1.55g / ml and a fineness (8-10% sieve residue). Material, spare.

[0023] c. Pouring 3: Add 2030kg of the above slurry into the pouring mixer and stir, and then add 200kg of cement, 280kg of quicklime powder, 1.45kg of aluminum powder, and 180-200kg of water to mix a...

Embodiment 2

[0029] It can be seen from the accompanying drawings that a process for producing aerated concrete using calcium carbide waste slag as a raw material, in accordance with the requirements for the production of 06-grade strength 5.0 products, the specific process is as follows:

[0030] a. Mixing pulping 1: The volume ratio of materials is: 1665kg of quartz sand with a moisture content of about 20%, 170kg of calcium carbide waste residue with a moisture content of about 30%, and 60kg of gypsum with a moisture content of about 30%. 1.75 of the mixture;

[0031] b. Grinding 2: Use a slurry pump to pump the above-mentioned mixture into a ball mill for grinding for 30min-60min, so that the slurry reaches a specific gravity of 1.55-1.57g / ml and a fineness (sieve residue 8-15%) Material, spare.

[0032] c. Pouring 3: Add 2450kg of the above slurry into the pouring mixer and stir, and then add 220kg of cement, 350kg of quicklime powder, 1.46kg of aluminum powder, and 120-160kg of wate...

Embodiment 3

[0038] It can be seen from the accompanying drawings that a process for producing aerated concrete using calcium carbide waste slag as a raw material, according to the requirements of A3.5 for the production of B06 grade product strength, the specific process is as follows:

[0039] a. Mixed pulping 1: The volume ratio of materials is: 1665kg of quartz sand with a moisture content of about 20%, 170kg of calcium carbide waste residue with a moisture content of about 30%, and 60kg with a moisture content of about 30%. the mixture;

[0040] b. Grinding 2: Use a slurry pump to pump the above-mentioned mixture into a ball mill for grinding for 30min-60min, so that the slurry reaches a specific gravity of 1.55-1.57g / ml and a fineness (sieve residue 8-15%) Material, spare.

[0041] c. Pouring 3: Add 2490kg of the above slurry into the pouring mixer and stir, and then add 220kg of cement, 330kg of quicklime powder, 1.46kg of aluminum powder, and 120kg of water to mix and stir for 1-2...

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Abstract

The invention discloses a process for producing aerated concrete by waste residue of calcium carbide, which can change waste into valuable and decrease the cost. The concrete steps of the process are as follows: the first step, according to the mixture ratio of materials (volume ratio), 60-80% of quartz sand (quartz voetail), 10-30% of the waste residue of the calcium carbide and 8-15% waste residue of citric acid (gypsum) are mixed to prepare slurry, and then the slurry is ground; the second step, according to the content mixture ratio of the concrete block (weight ratio), 2,300-2,700kg of the slurry material, 180-250kg of cement, 350-450kg of quick lime powder, 1.3-1.6kg of aluminum powder and residual amount of water are poured, precured, cut, steamed, removed from a kettle and stacked. The process has the advantages that the waste residue of the calcium carbide is chosen as the raw material in the process of manufacturing the aerated concrete, by mixing and grinding the waste residue of the calcium carbide, the prepared slurry is denser, the pores of the product are even, the whiteness is increased and the strength is also improved. The practice proves that the recycle of the waste residue of the calcium carbide regarded as waste can change the waste into valuable and the production cost is greatly reduced. The process is widely applied to the manufacturing field of concrete.

Description

technical field [0001] The invention relates to an energy-saving and emission-reducing environmental protection method for treating industrial residues, in particular to a process for producing aerated concrete by using calcium carbide waste residue as a raw material, which belongs to the field of concrete production. Background technique [0002] Calcium carbide residue is the industrial residue left after the production of acetylene gas. Its current utilization value is very low and it is generally discarded as waste. Because its solution is alkaline, it is highly corrosive, and it becomes powder after drying. How to deal with the pollution of calcium carbide and how to turn waste into treasure has always been a difficult problem that people want to solve but has not been solved well. Contents of the invention [0003] Aiming at the above-mentioned problems of polluting the environment, we analyzed that the main component of calcium carbide waste residue is slaked lime. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B28/10C04B14/06
CPCC04B28/18Y02P40/60Y02W30/91C04B14/06C04B18/0445C04B18/141C04B38/02C04B40/0046C04B40/0071C04B40/024
Inventor 许雪明
Owner SUZHOU BAIGAO NEW CONSTR MATERIALS
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